Aromatiske carboxylsyreestere, fremstillingen deraf og anvendelsen deraf som lægemiddel

摘要

A compound of the formula wherein R1 is hydrogen or C1-6-alkyl; R2 is C1-6-alkyl or adamantyl; R3 is C1-6-alkyl or hydroxy; or R2 and R3 taken together are -(CR6R7)n-; R4 is C2-8-alkyl, C2-8-alkenyl, C2-8-alkynyl, -OCH2R5 or C2-8-alkanoyl; and hydrogen when R3 is hydroxy; R5 is C1-6-alkyl, C2-6-alkenyl or C2-6-alkynyl; R6 and R7 are hydrogen or C1-6-alkyl; Y is oxygen or sulphur; and n is 3, 4 or 5, and pharmaceutically usable salts of carboxylic acids of formula I act as selective ligands of retinoic acid gamma -receptors and are useful for the treatment of epithelial lesions.